What the vulnerability does
01Description
The WP Import – Ultimate CSV XML Importer for WordPress plugin for WordPress is vulnerable to Server-Side Request Forgery in all versions up to, and including, 7.35. This is due to inadequate validation of the resolved URL after following Bitly shortlink redirects in the `upload_function()` method. While the initial URL is validated using `wp_http_validate_url()`, when a Bitly shortlink is detected, the `unshorten_bitly_url()` function follows redirects to the final destination URL without re-validating it. This makes it possible for authenticated attackers with Contributor-level access or higher to make the server perform HTTP requests to arbitrary internal endpoints, including localhost, private IP ranges, and cloud metadata services (e.g., 169.254.169.254), potentially exposing sensitive internal data.
Explanation of Vulnerability in Simple Terms
02Summary
WP Ultimate CSV Importer contains a server-side request forgery vulnerability that allows authenticated users to make the site send HTTP requests to internal or external systems on the attacker's behalf. An attacker with low-level WordPress access can exploit this to access internal services, retrieve sensitive data, or interact with external systems. The vulnerability affects all versions up to 7.35.
What an attacker can do
03Attacker Capabilities
Make the site send HTTP requests to internal or external systems to access data or services.
Potential impact on your site
04Site Impact
Attackers with basic WordPress access can probe internal networks, access cloud metadata, or interact with external APIs on your site's behalf.
Conditions required to exploit
05Prerequisites
Attacker must have a low-level WordPress user account (e.g., subscriber or contributor role).
Key dates
06Disclosure timeline
January 1, 2026
CVE published
April 8, 2026
Record updated
